Results 21 to 30 of about 2,496,096 (273)
Rosa funingensis (Rosaceae), a new species from Yunnan, China [PDF]
PhytoKeys, 2023 A new species Rosa funingensis and its variant R. funingensis f. rosea, both collected from Yunnan Province, China, are, for the first time, documented and illustrated in this study.
Ling-Na Zheng +7 more
doaj +3 more sources
The height of multiple edge plane trees [PDF]
, 2015 Multi-edge trees as introduced in a recent paper of Dziemia\'nczuk are plane trees where multiple edges are allowed. We first show that $d$-ary multi-edge trees where the out-degrees are bounded by $d$ are in bijection with classical $d$-ary trees.
Heuberger, Clemens +2 more
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Gelidocalamus xunwuensis (Poaceae, Bambusoideae), a new species from southeastern Jiangxi, China
PhytoKeys, 2017 Gelidocalamus xunwuensis W.G.Zhang & G.Y.Yang, a new species collected from Xunwu County of Jiangxi Province in China, is described and illustrated. The new species is similar to G. stellatus in the habit, but differs by internodes sparsely hairy
Wen-Gen Zhang +4 more
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Salinity tolerance improvement of in vitro propagated Paulownia tomentosa using proline
Bulletin of the National Research Centre, 2020 Background Paulownia tomentosa has been used as an ornamental plant and is still vastly used for this objective and can be utilized for the production of energy, wooden building materials, and paper pulp.
Nora Muhammad Youssef +2 more
doaj +1 more source
Categorizing Ideas about Trees: A Tree of Trees
PLoS ONE, 2013 The aim of this study is to explore whether matrices and MP trees used to produce systematic categories of organisms could be useful to produce categories of ideas in history of science. We study the history of the use of trees in systematics to represent the diversity of life from 1766 to 1991.
Marie Fisler, Guillaume Lecointre
openaire +4 more sources
Resistance of Scotch Pine Varieties to Zimmerman Pine Moth (Lepidoptera: Pyralidae) and Its Impact on Sales in a Choose and Cut Christmas Tree Plantation [PDF]
, 2017 Nine varieties of Scotch pine, Pinus sylvestris, were assessed for their susceptibility to Zimmerman pine moth, Dioryctria zimmermani, in a choose and cut Christmas tree plantation.
Sadof, Clifford S
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Tree contractions and evolutionary trees [PDF]
SIAM Journal on Computing, 1997 An evolutionary tree is a rooted tree where each internal vertex has at least two children and where the leaves are labeled with distinct symbols representing species. Evolutionary trees are useful for modeling the evolutionary history of species. An agreement subtree of two evolutionary trees is an evolutionary tree which is also a topological subtree
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MicroorganismsAlpine meadows on the Qinghai–Tibetan Plateau are experiencing rapid degradation due to climate change and anthropogenic disturbances, leading to severe ecological consequences.
Bingzhang Li +5 more
doaj +1 more source
, 2015 Model tree induction is a popular method for tackling regression problems requiring interpretable models. Model trees are decision trees with multiple linear regression models at the leaf nodes.
Frank, Eibe +2 more
core +2 more sources
Trees within trees II: Nested fragmentations [PDF]
Annales de l'Institut Henri Poincaré, Probabilités et Statistiques, 2020 Similarly as in (Blancas et al. 2018) where nested coalescent processes are studied, we generalize the definition of partition-valued homogeneous Markov fragmentation processes to the setting of nested partitions, i.e. pairs of partitions $( , )$ where $ $ is finer than $ $.
openaire +3 more sources